水下麥克風(Brüel & Kjær 8104)

 

 

 

8104型水聽器為寬頻標準測量傳感器(搭配電荷放大器),用在0.1Hz120kHz的頻率範圍內進行絕對聲音測量,接收靈敏度為-205 dB re 1V /μPa。還可以作為水下發音器(搭配功率放大器),是理想的校準工具。

 

規格

 

Voltage sensitivity with cable

56 uV/Pa ± 15 uV

Charge sensitivity

0.44 pC/Pa

Capacitance with integral cable

7800 pF

Frequency range re. 250 Hz

0.1 Hz-10 kHz (±1.5 dB)

0.1Hz–120kHz (+4/−12.0dB)

Operating temperature range short-term continuous

-30 to +80

Max operating static pressure

252 dB = 4 × 10^6 Pa

Dimensions

120mm

Weight including integral cable

1.6kg

Integral cable

10 m waterblocked low-noise shielded cable to MIL-C-915 with BNC plug

規格書下載